US3014849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
cottle
Assignee: —
•
Filing: —
•
Granted: 1961-12-26
•
Expires: 1978-12-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:23
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C08; C08F; C08F110/00; C08F110/02; C08F2/00; C08F2/04; C08F2/06; C08F2/12; C08F2/14; C08F210/00; C08F210/16; C08F6/00; C08F6/001; C08F6/003; C08F6/02; C08F6/06; C08F6/12; C08L; C08L23/00; C08L23/02; C08L23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A PROCESS OF POLYMERIZING 1-OLEFINS TO SOLID POLYMER IN THE PRESENCE OF A HYDROCARBON DILUENT AND SEPARATING SOLID POLYMER FROM SAID DILUENT THE IMPROVEMENT OF RECOVERING SAID DILUENT FREE OF SOLUBLE POLYMER FORMED DURING THE POLYMERIZATION COMPRISING PASSING THE SOLVENTPOLYMER SOLUTION AFTER BEING FREED OF PRECIPITATABLE SOLID POLYMER TO A FRACTIONATING COLUMN WHEREIN THE SOLUTION IS SEPARATED INTO AN OVERHEAD FRACTION CONSISTING OF SOLVENT ESSENTIALLY FREE OF POLYMER AND A KETTLE FRACTION CONSISTING OF AN ENRICHED POLYMER SOLUTION, ADMIXING THE ENRICHED POLYMER SOLUTION WITH WATER, STEAM STRIPPING THE ENRICHED POLYMER SOLUTION TO TAKE THE SOLVENT AND WATER OVERHEAD AND LEAVING A POLYMER-WATER SLURRY AS KETTLE PRODUCT, FRAC-
Claim 2
Dependent Claim
108 words
IN A PROCESS OF POLYMERIZING 1-OLEFINS TO SOLID POLYMER IN THE PRESENCE OF A HYDROCARBON DILUENT AND SEPARATING SOLID POLYMER FROM SAID DILUENT THE IMPROVEMENT OF RECOVERING SAID DILUENT FREE OF SOLUBLE POLYMER FORMED DURING THE POLYMERIZATION COMPRISING PASSING THE SOLVENTPOLYMER SOLUTION AFTER BEING FREED OF PRECIPITATABLE SOLID POLYMER TO A FRACTIONATING COLUMN WHEREIN THE SOLUTION IS SEPARATED INTO AN OVERHEAD FRACTION CONSISTING OF SOLVENT ESSENTIALLY FREE OF POLYMER AND A KETTLE FRACTION CONSISTING OF AN ENRICHED POLYMER SOLUTION, ADMIXING THE ENRICHED POLYMER SOLUTION WITH WATER, STEAM STRIPPING THE ENRICHED POLYMER SOLUTION TO TAKE THE SOLVENT AND WATER OVERHEAD AND LEAVING A POLYMER-WATER SLURRY AS KETTLE PRODUCT, FRAC-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |